Does GCP Cloud Armor support TCP load balancer? I am unable to add TCP load balancers as a Targets in Cloud Armor?

In the GCP cloud armor documentation, it is mentioned here, that it supports HTTP(S) and TCP load balancers to be configured. But I am unable to add TCP load balancer as a Target in Cloud Armor as it doesn't show the TCP load balancer in the target list.

As per the following documentation, Cloud Armor only protects external HTTP(S) load balancers, the link you are mentioning is the automated protection GCP provides by default to HTTP / Proxy (TCP / SSL) Load balancers and in what network tier does this protection is available.

Additionally, it mentions that Cloud Armor is available for the network standard tier, but not in conjunction with Proxy Load Balancers.